Walkie-talkies and the XL2 at DVinfo.net

Go Back   DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon HDV and DV Camera Systems > Canon XL and GL Series DV Camcorders

Canon XL and GL Series DV Camcorders
Canon XL2 / XL1S / XL1 and GL2 / XM2 / GL1 / XM1.


Reply
 
Thread Tools Search this Thread
Old August 29th, 2005, 01:04 PM   #1
Regular Crew
 
Join Date: Feb 2005
Location: O'Neals, CA
Posts: 71
Walkie-talkies and the XL2

Had a weird problem on a shoot this weekend that I thought I'd share.

The image from one of our cameras was "jumping" just after we started rolling. The AD on the monitors was yelling, "Who's bumping the camera?" It turned out that when the director keyed the transmit button on his walkie while leaning over the camera, it somehow affected the circuitry of the image stabilizer, causing the image to jump. When he took a step away from the camera the problem went away.

Just a heads-up.
Eric Elliott is offline   Reply With Quote
Old August 29th, 2005, 04:01 PM   #2
Regular Crew
 
Join Date: Jul 2005
Location: United Kingdom
Posts: 34
Ya, same thing as mobile phones aint it? I think (don't quote me on this) its the electromagnetic current that runs through devices like that that pull or push the image in strange directions. You can also get it from large batteries near monitors or TV's.
Andrew Wills is offline   Reply With Quote
Old August 29th, 2005, 05:32 PM   #3
Major Player
 
Join Date: Aug 2004
Location: Clermont, FL.
Posts: 941
Yeah, somebody posted recently about this with the Sony cameras as well.
Laurence Kingston is offline   Reply With Quote
Old September 5th, 2005, 04:34 PM   #4
Major Player
 
Join Date: Mar 2005
Location: Ventura, California, USA
Posts: 751
Did you check the tape later? I'm curious whether it actually did affect the image stabilizer or whether it only affected what was outputted to the monitor.
Bill Porter is offline   Reply With Quote
Old September 5th, 2005, 05:52 PM   #5
Regular Crew
 
Join Date: Feb 2005
Location: O'Neals, CA
Posts: 71
Yep, it was on the tape, too.
Eric Elliott is offline   Reply With Quote
Old September 6th, 2005, 10:11 AM   #6
Regular Crew
 
Join Date: Mar 2005
Location: Kirkland, WA
Posts: 191
Nextel

Out of curiousity, was his walkie talkie a Nextel brand? They send out an RF signal that will cause interference with your equipment, whether sending or receiving, or just talking on the phone. Your description sounds just like the Nextel RF interference pattern.
Bill Zens is offline   Reply With Quote
Old September 6th, 2005, 10:49 AM   #7
Wrangler
 
Join Date: Oct 2003
Location: DFW area, TX
Posts: 6,108
Images: 1
Quote:
Originally Posted by Bill Zens
Out of curiousity, was his walkie talkie a Nextel brand? They send out an RF signal that will cause interference with your equipment, whether sending or receiving, or just talking on the phone. Your description sounds just like the Nextel RF interference pattern.
Bill,

This problem isn't limited to Nextel. Most all cell phones periodically transmit a signal to let the cell system know their location. It started with the digital phones. If the received signal goes away, the phone will transmit as it searches for a new tower. That's why your cell phone battery will drain quickly if you are in an area of poor coverage.

=gb=
Greg Boston is offline   Reply With Quote
Old September 7th, 2005, 10:18 AM   #8
Major Player
 
Join Date: Jun 2004
Location: McLean, VA United States
Posts: 749
Nor is it limited to cell phones. Any device which radiates electromagnetic energy, intentionally or unintentionally, has the potential to interfere with other electronic devices. Conductive elements of the victim device act as antennas and there is often some circuit element which will rectify the rf picked up by the "antenna" thus introducing unwanted currents into the circuit. It is part of the equipment designer's art to render devices immune to this EMI but note the use of the word "art". This is why the airlines make you turn everything off in the initial and terminal phases of flight. AFAIK no computer, cell phone or CD player ever has interfered with aircraft nav gear but the fear is that it might.
A. J. deLange is offline   Reply With Quote
Old September 7th, 2005, 11:23 PM   #9
Wrangler
 
Join Date: Oct 2003
Location: DFW area, TX
Posts: 6,108
Images: 1
Quote:
Originally Posted by A. J. deLange
Nor is it limited to cell phones. Any device which radiates electromagnetic energy, intentionally or unintentionally, has the potential to interfere with other electronic devices. Conductive elements of the victim device act as antennas and there is often some circuit element which will rectify the rf picked up by the "antenna" thus introducing unwanted currents into the circuit. It is part of the equipment designer's art to render devices immune to this EMI but note the use of the word "art". This is why the airlines make you turn everything off in the initial and terminal phases of flight. AFAIK no computer, cell phone or CD player ever has interfered with aircraft nav gear but the fear is that it might.
Very true. I can't have my XL-2 powered up in proximity to my HDTV when receiving OTA signals because it tears up the picture. Obviously, the XL-2 is the radiator in this equation. Oh the stories I could tell about strange things that happen when rf energy gets into devices that it's not supposed to be in. :-)

-gb-
Greg Boston is offline   Reply With Quote
Old September 9th, 2005, 08:58 PM   #10
Regular Crew
 
Join Date: Aug 2002
Location: Atlanta, Georgia
Posts: 1,892
Yep. Laurence, you're probably referring to this thread.

www.dvinfo.net/conf/showthread.php?t=35565
James Emory is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon HDV and DV Camera Systems > Canon XL and GL Series DV Camcorders

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 03:10 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network